Arcing horn



Dec. 22, 1942. J. M. SHEADEL ET A1.

ARCING HORN 2 Sheets-Shet 1 Filed Nov. 14, 1941 Snoentor N l4. SHEADEL NJ. TAYLOR Cittomeg Dec 22, 1942. J SHEADEL f 2,306,359

ABCING HORN Filed Nov. 14, 1941 r 2 Sheets- Sheet 2 V ZSnventot JOHN M.SHEADEL JOHN J. TAYLOR I Gttomeg Patented Dec. 22, 194?.

U N ilf' E its .s bl

ior, Wadsworth, @hio, assignors to The Ulric Company, Mansfield, Ohio, acorporation of New Hersey Application November 14, 15241, gerial No.118,162

or. ite -M This invention relates to arcing horns and in its morespecific aspects relates to a method and means of securing an arcinghorn to an insulator assembly.

The object of this invention is to construct a fixture i'or frictionallyholding an arcing horn in position on an insulator assembly.

A further object of the invention is to provide a fixture for holding anarcing horn on an insulator assembly that avoids the use of a pluralityof bolt or screw clamped devices.

A further object of the invention is to provide a fixture for mountingan arcing horn on an insulator assembly in which the arcing horn isone-piece bowed pipe assembly.

Another object or" the invention is to provide an arcing horn for aninsulator assembly in which the horn comprises a one-piece bowedfabricated pipe assembly.

A still further object of the invention is to M provide a fixture forassembling arcing horn onto an insulator assembly in which the horn maybe replaced without removing the fixture from the assembly or removingplurality of bolts or rivets.

Another and further object of the invention is to provide a fixture thatcan be forged or cast as a single unitary structure.

Another and still further object of the invention is to construct anarcing horn that is formed from one or more standard pipe lengths eachof which are bent such as to form the pipe into a closed loop by weldingthe ends together, the ends of the loop being substantially U shaped.

\Other and still further objects are to simplify the construction of anarcing horn and its fixture for securing same to an insulator assembly,to reduce the cost of assembly and manufacture and to simplify therepair and replacement operation.

Other and further objects of the invention will appear to those skilledin the arts to which this invention pertains as the description proceedswhich taken in connection with the accompanying drawings sets forth apreferred embodiment thereof but such disclosure is not to be con struedas a limitation of the invention which is limited only by the appendedclaims and any and all modifications, variations and alterations ofstructure coming within the spirit and scope thereof are deemed to beincluded herein.

In the drawings Fig. 1 shows an elevational view of insulator assembly.

Fig. 2 shows a plan view of the upper end of the insulator assembly withparts in section to show detail.

Fig. 3 shows a view of the lower arcing horn taken substantially alongthe line 3-3 of Fig. 1.

Fig. 4 shows a side elevational View of the lower of the inventionarcing horn and the fixture for securing same to insulator assembly.

Fig. 5 is a view taken substantially along the line 55 of Fig. d.

Fig. 6 shows a side elevational view of the fixture.

Fig. 7 shows an end elevational View of the fit ture without the arcinghorn in position.

Fig. 8 is a view taken along the line 8-s2- of Fig. 6.

' igs. 9-14 show the steps the arcing horn in which:

Fig. 9 shows a standard pipe section.

1% shows two bent pipe sections before welding.

Fig. 11 shows the two pipe sections after welding.

Fig. 12 shows an alternate step with a single pipe section having twobends therein and only one weld.

Fig. 13 shows the bendin of the pipe direction, and

Fig. la shows the bending of the pipe other or transverse direction.

Fig. 15 shows an enlarged section along the line l5lb of Fig. 6, withhorn in position.

Fig. 16 shows an enlarged detail of the pipe tion engagin one side ofthe fixture.

The electrical transmission arts in which strings of insulators areemployed call for the use of arcing horns to transfer flash-overs awayfrom the breakable porcelain over onto metallic elements extendingtransversely from the ends of the insulator and which talre up theflash-over at such times as it occurs. There are various expedientswell-ln1own in the arts which provide for assembly of the arcing hornsonto the string of insulators many of which employ riveted assemblies ora plurality of screws of divers classification which for purposes ofdisassembly of the arcing born as .well as its assembly involve a ratherlaborious proceeding. The applicant has, therefore, provided a simpleand inexpensiv uni-- tary fixture construction to receive one or more ofthe arcing horns that will allow a ready assembly of the arcing hornonto the fixture that secures the same to an insulator assembly and thatavoids the use of a riveted or a screwed construction. The applicant hasfurther provided a new and novel unitary arcing horn construction thatin cooperation with the fixture makes possible a sub stantial and sturdyconstruction and which takes advantage of the natural resiliencypossessed by a rod or tubular assembly of which the arcing ofmanufacture of in one in the horn is constructed to hold same to thefixture.

The carrying out or the embodiment of the above purposes and objects isset forth in the accompanying drawings in which i, i is representativeof a string of porcelain insulators to the upper end of which an arcinghorn 2 is secured by means of a fixture 3 with which linkage 4 isswingably associated for the purpose of suspending same from asupporting tower or crossarm of such a tower. The arcing horn 2furthermore is intended to be permanently fixed to the upper end of theinsulator assembly and in the event of replacement the entire unit andits fixture 3 is replaced.

The lower end of the assembly has arranged thereon an arcing horn 5which is of a single, continuous loop, unitary construction, morespecifically detailed hereinafter, secured to and frictionally held in afixture 6 suspended from the pin of the terminal insulator of theinsulator assembly. A conductor (Jet is suspended from-the fixture G ina hanger l, of more or less conventional desi .1, pivotally supported tothe said fixture 6.

The construction of he fixture 5 is more specifically and clearlydetailed in Figs. 4 through 8 in which a head tie is provided having anopening or socket ll therein to receive the head of an insulator pinwhich is common to the insulator arts. An opening 52 is formed in thehead (is as shown which is adapted to receive a cotter pin to preventthe disassembly of the fixture ll from the insulator l, except at theelection of an operator.

The arcing horn 5 is oi the shape generally indicated in Figs. 3 and 4which shows the ends thereof bowed upwardly and the mid-sectioncompressed, bent inwardly or converging such that the horizontal orstraight portions thereof are parallel and in substantial proximity toeach other. dinally extended seat portion 3, as more particularly shownin Figs. 6 and 8 and partially circumscribes one of the straight sideportions of the arcing horn The opposite side of the fixture hasarranged thereon a pair of projections 9, 9 that are spaced apartsufficiently in the vertical direction such that they will receive theother straight side portion of the arcing horn 5 and form the equivalentof the seat to receive that side portion of the The principal reason forthe projections 9, Q is to make possible a quick assembly of the horn 5onto the fixture 6 and obviate the necessity of an expansive spreadingof the arcing horn to place it in position on the fixture 3. Theprojections 9, 9 only require that the one portion of the arcing horn beseated firmly in the members 8, i3 and in the opposite portion can beeased into position with a minimum of spreading of the converging sidesof the arcing horns. The natural resiliency of the bent portions of thearcing horn 5 will keep the horn firmly in position on the fixture 6without the use or aid of rivets or screws as in previous constructionswell-known to the arts. The horn 5 may be provided with notches or slotsI25 adapted to receive the projections ii if so desired in order toprevent lateral motion of the horn 5 relative to fixture By reversemotion the arcing horn 5 is disassembled from the fixture forreplacement or repair as the occasion demands.

The lower end of the fixture E is provided with an eye that is adaptedto receive the clevis portion of the hanger l and a conventional pin lais then the fixture 5 shown.

The arcing horn ard section of pipe stock, which may be and the stringof insuiators i l, as

is fabricated from a stand l or may be of bar or rod of any well-knowncommer- The fixture 6 is provided with a longituinserted to suspend thehanger i from cial construction such as a seamless tube or a weldedpipe. The pipe or rod sections H are bent into the shape of a U in whichthe ends have the appropriate spread and are welded together at points[2, E2 to thereby form an endless section of tubing. As an alternateconstruction the step illustrated in Fig. 12 may be employed in which asingle section of pipe, rod or tubing is bent into a double U-form, asoutlined in Fig. 11, in which it is only necessary to provide one weld12a as indicated in the Fig. 12. Following the welding of the pipe endor ends to form an endless loop, the mid-portion of the endless tubingis bent inwardly as shown more particularly in Fig. 13 and in Fig. 3,such that the sides of the loop converge and are brought intosubstantial proximity to each other and having a portion of each of thesides parallel. The reason for bringing them into substantial proximityis that when they are spread apart to receive the fixture ii thetendency of the sections will be to move toward each other andconsequently firmly frictionally grip the seat 8, 8 and seat between theprojections 9, 9, as previously described. The weld 12a is also shown inFig. 13 to indicate where it may be placed when the alternate step ofFig. 12 is employed. After the pipe section has been shaped in themanner shown in Fig. 13 it then has the ends thereof bowed upwardly ortransversely to the longitudinal axis of the loop as illustrated moreparticularly in Figs. 4 and l l such that when ultimately assembled intothe insulator suspension assembly the tips of the arcing horn 5 willpoint upwardly or in the direction of the tips or ends of the horn 2. Itshould be observed that the welds are preferably placed in any straightsection of the pipe and may be placed, e. g., as at Ilia although theexact location of the weld is immaterial to the instant construction.

From the foregoing it should be apparent that a simplified constructionhas been provided to receive a unitary arcing horn construction that isfractionally held in position on the insulator assembly. That which isregarded new, novel and useful and which is sought to be protected byLetters Patent of the United States is as follows:

I claim:

1. In an arcing horn supporting device; an arcing horn composed of anendless tube formed into an elongated structure bowed at its ends andhaving the mid-section portion of said horn disposed in immediateproximity to each other; means to suspend said horn from a string ofinsulators which comprises an elongated member disposed between saidmid-section portions of said horn, said means having channels therein toseat said horn and means to prevent relative vertical displacement ofsaid means; said horn frictionally engaging said means.

2. In an arcing horn device; an arcing horn in which two portionsthereof are resiliently held in close proximity to each other; a memberdisposed between said two portions and frictionally held there, saidmember having means thereon in which each of said portions seat, saidmember having means thereon to prevent relative vertical displacement ofsaid member and said horn portions and means on said member to suspendsame from an insulator.

3. In an insulator fixture; a tubular horn having two portions insubstantial proximity; a fixture disposed between said portions andadapted to secure same to an insulator, said fixture having seatportions disposed transversely to the principal axis of said fixture toreceive said horn portions; said fixture having other means thereon toprevent displacement of said horn along its principal axis; and saidhorn portions resiliently engaging said fixture to prevent movement ofsaid horn portions relatively axially of said seat portions.

4. In an arcing horn device; a horn having two portions disposed inproximity to each other; a coupling adapted to be frictionally engagedbetween said portions, said coupling having means thereon extending fromthe side thereof in which to seat one of said horn portions, and saidcoupling having means thereon to prevent relative vertical movement ofsaid other portion and said coupling.

5. In an arcing horn device the combination; an arcing horn comprisingan endless tubular section bent into a bow and having two portions ofsaid bow bent to place them in proximity to each other; a couplingdisposed between said portions, said coupling having a seat portion toengage one of said horn portions; and means on said coupling engagingthe other of said horn portions to prevent same from being displacedrelatively vertically to said coupling; and said horn portionfrictionally engaging said coupling.

6. In a one-piece arcing horn; a body member having means thereon tomount same on an insulator pin; a one piece arcing horn mounted on saidbody; means on said body to hold said horn thereon which includes a seatextending transversely of said body to receive one portion of said horn;projections on said body to receive a different portion of said horn;said horn portions frictionally engaging said body and, maintained bythe resilience of said horn portions.

'7. In an arcing horn device; a closed loop horn in which the sidesthereof converge toward each other and in which portions of the sidesthereof remain straight and parallel to the longitudinal axis of thehorn; means to support said horn on an insulator assembly, said meanshaving a seat adapted to receive one of said straight parallel sideportions of said horn. and means on said support adapted to receive theother of said straight side portions of said horn; said horn resilientlyand firmly engaging said fixture.

8. In an arcing horn device; a bowed closed loop arcing horn, in whichthe sides converge towards each other and in which a portion of each ofsaid sides are parallel and in substantial proximity; a fixture formounting same on an insulator assembly, said fixture having means on oneside thereof in which to seat one of said portions and means on theopposite side thereof to engage the other portion; said horn resilientlyclamping itself to said fixture.

9. In an arcing horn, the combination; a bowed closed loop arcing hornin which the sides converge towards each other and in which portions ofthe sides are straight and parallel; a fixture for supporting said hornon an insulator assembly which includes, means to seat one of saidstraight side portions, and spaced projections on said fixture adaptedto receive the other of said straight portions, said fixture disposedbetween said straight portions and frictionally held there by theresilience of said loop.

10. In an arcing horn supporting device; an endless tube arcing hornformed into an elongated structure bowed at its ends and having themidsection portions thereof disposed in immediate proximity to eachother; means to suspend said horn from a string of insulators whichincludes an elongated member arranged between said midsection portionsof said horn, said means having a. formation thereon to seat said hornto prevent relative vertical displacement of said horn and said meansand projections on said means engaging slots in said horn to preventlateral displacement of said horn relative to said means.

11. In an arcing horn device; a one-piece arcing horn in which twoportions thereof are held in close proximity to each other; a memberdisposed between said two portions; said member having means thereon inwhich each of said two portions seat, said means being so constructedand arranged that they will prevent vertical and lateral displacement ofsaid arcing horn relative to said member and means on said. member tosuspend same from an insulator, said portions resiliently engaging saidmeans.

12. In an insulator fixture; a continuous barlike horn having twoportions spaced in substantial proximity to each other; a fixturearranged between said portion and including a head structure to securesaid fixture to an insulator, said fixture having a seat portion toreceive one of said two portions; means on said fixture engageable in aslot in the other of said two portions, and said horn portion beingresiliently urged into engagement with said seat and with said means tothereby prevent relative lateral and vertical movement thereof withrespect to said fixture.

13. In an arcing horn device; a horn which has two portions disposed inspaced substantially parallel proximity to each other; a couplingelement arranged between said two portions; and means on each side ofsaid coupling in which said two portions are adapted to seat, said meansand said horn being constructed and arranged such that said horn will beretained against lateral and vertical displacement relative to saidcoupling.

14. In an arcing horn device; a bowed closed loop arcing horn, in whichthe sides converge towards each other and in which a portion of each ofsaid sides are parallel and in substantial proximity; a fixture formounting same on an insulator assembly, said fixture having means on oneside thereof in which to seat one of said portions and means on theopposite side thereof engageable with a slot in the other portion toprevent lateral motion of said horn relative to said fixture; said hornresiliently clamping itself to said fixture.

15. In an arcing horn, the combination; a bowed closed loop arcing hornin which the sides converge towards each other and in which portions ofthe sides are straight and parallel; a fixture for supporting said hornon an insulator assembly which includes, means to seat one of saidstraight side portions, and spaced projections on said fixture adaptedto be received in a slot in the other of said straight portions toprevent lateral motion of said horn relative to said fixture, saidfixture disposed between said straight portions and frictionally heldthere by the resilience of said loop.

JOHN M. SHEADEL. JOHN J. TAYLOR.

